#!/bin/bash
for i in ./*
do
echo $i
done

for i in a, b, c, d, e
do
echo $i
done

total=0
for((i=1;i<=100;i++));
do
total=`expr $total + $i`
done
echo "total=$total"

total=0
echo "total=$total"

num=0
while((num<=100));
do
total=`expr $total + $num`
num=`expr $num + 1`
#echo "$num"
done
echo "total2=$total"


echo "PWD=$PWD"
